人体经过白天的劳作,到了晚上已经很疲乏了,充足的休息可以使体内的各器官得到充分的休息和恢复,能量得到最大的补充。研究结果显示:成人每天的睡眠时间以7～8小时为宜;儿童更长些,以9～10小时为宜;60岁以上的老年人每日睡眠时间可适当缩短,但最好不要少 The body after work daytime, at night has been very tired, adequate rest can make the body organs get adequate rest and recovery, the energy is the maximum complement. The results show that: adults sleep every day to 7 to 8 hours is appropriate; children longer, 9 to 10 hours is appropriate; more than 60 years of age the daily sleep time may be appropriate to shorten, but it is best not less